%0 Journal Article
%A BROOKS, M.
%A BAYERLY, M.
%A LLEWELLYN, D. J.
%T A new geological model to explain the gravity gradient across Exmoor, north Devon
%D 1977
%R 10.1144/gsjgs.133.4.0385
%J Journal of the Geological Society
%P 385-393
%V 133
%N 4
%X Recent long seismic lines in South Wales and the Bristol Channel indicate a structural culmination under the southern part of the Bristol Channel, where a layer with a seismic velocity of 6.1 km/s approaches to about 2 km of the surface. It is shown that the gravity field across Exmoor and the Bristol Channel can be explained by a simple geological model in which a thick sequence of relatively low density Lower Palaeozoic or late Precambrian rocks occupies the core of this culmination. The model casts further doubt on the existence of a major thrust under Exmoor.
%U http://jgs.lyellcollection.org/content/jgs/133/4/385.full.pdf